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Horology · Sundials
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from Tratado da sphera : com a theorica do sol & da lua. E ho primeiro liuro da Geographia de Claudio Ptolomeo Alexa[n]drino. (1537)](https://img.insideoutlibrary.com/img/200/ia-tratadodaspherac00sacr-22-0.webp)
![An illustration from Sphaera mundi, siue cosmographia quinque libris : recèns auctis [et] eme[n]datis absoluta : in qua tum prima astronomiæ pars, tum geographi[a]e, ac hydrographi[a]e rudimenta pertracta[n]tur. (1552)](https://img.insideoutlibrary.com/img/200/ia-sphaeramundisiue00fine-32-0.webp)
